1sock 
/ˈsɑ:k/ noun
plural socks /ˈsɑ:k/ noun [count] : a piece of clothing that is worn on your foot and that covers your ankle and sometimes the lower part of your leg
▪ a white cotton sock — usually plural ▪ a pair of socks ▪ wool/ankle/athletic socks — see color picture; see also bobby socks, tube sock
▪ a white cotton sock — usually plural ▪ a pair of socks ▪ wool/ankle/athletic socks — see color picture; see also bobby socks, tube sock
knock/blow your socks off
informal : to affect or impress you in a very strong and favorable way
▪ This song will knock your socks off. [=you will enjoy this song very much]
▪ This song will knock your socks off. [=you will enjoy this song very much]
put a sock in it
informal — used to tell someone to stop talking ▪ I wish someone would tell him to put a sock in it.
— compare 2sock
